AirHint found the following cheapest return flights from Las Vegas (LAS) to London (LGW) in September 2025 (see full year).

Return flights

10 Sep - 24 Sep	Spirit Airlines
06 Sep - 16 Sep	Spirit Airlines
18 Sep - 24 Sep	Spirit Airlines
16 Sep - 27 Sep	Spirit Airlines
01 Sep - 09 Sep	Spirit Airlines
02 Sep - 09 Sep	British Airways	direct
06 Sep - 16 Sep	British Airways	direct
16 Sep - 27 Sep	British Airways	direct

Also check the deals for one-way flights from Las Vegas to London in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Las Vegas to London in September from 441€

Return flights